Jack bought 4 dozen eggs at $10 per dozen. 6 were broken. what percent of his money goes to waste

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle